App Store Optimization (ASO) is a process to increase visibility of the mobiles app on the different mobile operating systems' mobile phones such as Windows Phone, iPhone, Android, BlackBerry and iPad. Generally these mobiles app stored on Google Play store and iTunes store. Generally Google play used to store Android app and iTunes store used to store Apple phones app. ASO process is similar SEO to get top ranking on app store such as Google Play (ASO Android) and iTunes (ASO IOS).

ASO started just July 2008 and first launched app by Apple on iTunes store and recently Google also launched Google Play app store in Sept 2008. ASO is some like with search engine optimization (SEO). Basic target of the app store optimizer to get high ranking on Google play and iTune than their competitors. The basic goal of the ASO to improve download of the app on users mobiles. Optimizer used generally two type method to optimization app store which includes black hat and white hat technique.